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A. P. THOMASSON. HEATlNG STOVE. APPLICATION FILED OCT. 3h 1921.

1,416,140. 4 rammed May16, 1922.

In van ivr Jim am R Thomasjon Ares PATENT orrics. f

ADAM r. THOMASSON, or cH'IoAeo, ILLINOIS. 1

HEATING srovn.

To all whom it may concern: I

Be it known that I, ADAM P. THoMAssoN,

I a'citizen' of the United States, and a resident will be highly eflicient in use.

A further object-of my invention the provision of a heating stove, whereby the fresh fuel can be fed under the bed of burn ing fuel. In this respect I have found that in burning soft coal, such as is-commonly called Pocahontas or mine run coal, in a heating stove, that thesmall lumps of coal, durmg'coinbustion, unite intoone large lump of partially burned fuel which cling to the sides of the stove and usually constitute the crustof the top layer of the fire bed.

or crust thus formed, the partially burned fuel, or cinders, as they are commonly called, will radiate heat'but as soon asthe combustion of the fuel dies: out,'the partially burned fuel will cease to radiate heat. It is, there fore, my object to provide a means whereby fresh fuel can be conveniently fed under the lump or lumps of partially burned fuel, which will keep the partially burned fuel in a state of combustion.

Other objects will appear hereinafter. The invention consists in the combinations and arrangements of parts hereinafter described and claimed. The invention will be best understood by reference to the accompanying drawing forming a part of this application, and in-which,

Fig. 1 is a side elevational view of my'improved heating stove, partly broken away to more fullyillustrate the broad constructio embodied in the invention.

Fig. 2 is a sectional detail view of the same taken substantially on line 2-2 of Fi 1, and Fig. 3 is a sectional detail view of same, taken substantially on line 3-3 of Fig. 1.

The preferred form of construction, as

illustrated in the drawing, comprises a heat- Speeification ofIetters Patent. I Patent ed Application filed October 31, '1921. 'Serial 1T0. 511,557.

It, has been my experience that as long as there is a combustion of fuel under the top layer the I May 16,1922.

ing stove 5 of any approved type having a grate 6, and anash pit'or'box 7 mounted on supporting legs 8. Mounted on the heating stove 5, as shown,- is a fuel feeding hopper 9 which receives the freshfuel 10 which is dischargedthrough an opening 11,formed 1n; the wall of the fire 1 pot of the heating stove 5, under the layer of lumps 11' containing cinders and other unburned particles of combustion. The hopper 9 is preferably a casting provided with flanges *12 affording means for securing the hopper in position,

asshown in Fig. 1 of the drawing.

The hopper, however, may be formed of sheet metal or any other suitablematerial which willserve the purpose. The top wall 13 of the hopper-9 is provided with an openng 14, through which the fuel is di'scharged into the hopper, and isprovided with the usual closure-or lid member 15, sue-has is employed iii-connection with 5 proved heating stove.

In most coal stoves it has been found that at timesthegases. from the fire pot escape through the small crevices between the edge of the opening 14; and theclid l5. To prevent the escape of' such gases I provide an outer closure member 16, of any approved type, and which is hingedly mounted on the side wall of the heating stove, by any suitable means. The outer closure member 16 is provided with a semi-annular depending flange 17 having a semi-annular flange 18, integrally formed therewith, andwhich rests upon the top wal l l 3 of the hopper, supporting the top of theclosure member in spaced relation with respect to the lid or top wall of the hopper. Thev gases escaping from the hopper into. the space between thetop of the hopper and closure member is drawn, by the force of the draft of the heating stove, back into the upper portion of the combustion chamberthrough a plurality of aligned ports 19. By this arrangement it is obvious that the gases from the fire pot arenot permitted to escape into the room where the stove is located, but will be drawn back into the combustion chamber through the ports 19, as will be readily understood.

As is clearly shown in Fig. 1 of the drawing, a portion of theside wall, above the opening 11, is flexed inwardly, as at 12. This arrangement is such that when feeding the fresh fuel into the fire, pot under the top most every ap-,

so i

layer of united cinders, the fresh fuel is prevented frombeing thrown or poked on top of the united cinders l1. 7

In use, a fire is built in the fire pot, int-he usual manner, the fresh fuel 10beingfed into the fire pot through the hopper 9. ,7

After the fuel has practically been consumed, the ashes, through the medium ofi'a shaker grate, (not shown), are discharged into the ash pit or box 7. It has been found that after the ashes have been discharged 1 from the fire pot into the ashpit. there remains a crust of the fire bed which is formed by the .melting together of the partially burned fuel, and which clings to the walls ,of the heating stove forming a space or recess between the crust thus formed and the fire grate. It is my vobject toutilizef this into the space serves to support this crust and consume therun-burlied fuel remaining inthe crust formed on the top of the fire bed. Thus,,by tl1e construction of a heat ing stove, as herein set forth, the cinders clinging to the side walls of the heating stove, whlch are often discharged into the ash pit, are all consumed into ashes and then discharged into the ash'pit.

While my improved heatingstove is especially designed for burning soft coal, in the manner hereinbefore stated, hard coal Steve.

as well as moist ashes containing unburned fuel may be burned in the stove as well. In burning molst ashes contalning unburned. fuel, the ashes are discharged on top of the r .c upper layer or crust ll or the fuel bed through the openingQO provided on the top Wall of the heating stove 5.. The flexed portion 12 prevents the ashes from being discharged into the hopper 9 and mixing with the fresh fuel 10.

my improved means for feeding fuel to the lowerportion of the fire bed, as herein stated, when burning moist ashes containing unburned fuel, the ashes are sepa rated from the fresh fuel, that is, the lower portion of the fire bed, by the upper portion of the fire'bed which constitutes'the united lumps of partially.burned fuel, or the crust l1, clinging to the side walls of the heating Thus, the moist ashes, are separated from the fresh fuel of the fire bed and preyented from quenching the burning fuel under the crust or upper layer of the fire bed, and the moist ashes, containing unburned fuel, is melted into a melting, doughy form, generating an inflammable gas, which greatly adds to the combustion of the ashes and the fresh fuel.

By a heating stove, as herein disclosed, it is obvious that the stove Will be a great fuel saver, inasmuch as very little, if any at all, of the fuel is discharged into the ash pit,

for the arrangementis such that the fuel is consumed until nothing is discharged in the ash pit but pure ashes.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is ca pable of'variation and modification without departing from-the spirit of the invention. 1, therefore, do not wish to be limited to the precise details of, the construction set forth, but desire to avail myself ofsuch va'- riations and modifications as comewithin the scope of the appended claims. q

Having described my invention, what I claim as new and desire to secure by Let- ,ters Patent, is

1. In a heating stove, the combination with the-combustion chamber, and fire pot thereof, of an opening insaid fire pot; means for feedingmoist ashes containing unburnt particles of combustion to said fire pot, a

hopper fixedly secured to said stove and surrounding said opening; an inner closure member for the opening of said hopper; an outer closure member hingedly mounted on said apparatus and supported in spaced relation with said first mentioned closure member; and means for permitting the passage of gas into said combustion. chamber fromthe space between said outer and inner closure members, substantially as described.

,2. In a heating stove, the combination with the combustion chamber and fire pot thereof, 50f means for feeding moistashes containing unburned fuel-to said fire pot;

he combination with a heating stove having a combustionchamber and a fire pot, of an opening in said fire pot; a hopper surroundlng said opening and fixedly secured to said heating stove for feeding fuel ,to

the lower portion of the fire bed in said fire pot, the side wall portion of said heating stove above said opening being fiexed inwardly to prevent the particles of combustion of the upper portion of said fire bed from being discharged into said hopper; an opening in the top wall of said hopper; a closure member for said opening; an outer closure member hingedly mounted on said heating stove and supported in spaced rela- In testimony whereof, I have signed my tion with respect to said first mentioned 010- name to this specification in the presence of 10 sure member; andda plufalifty o5 1aligned two subscribing witnesses.

orts formed in si e wal 0 sai eating v Stove for permitting the escape of gases into ADAM THOMASSON' said combustion chamber from said space Witnesses: between said closure members, substantially JOSHUA R. H. Por'rs, as described. I FREDA C. APPLETON. 

